Published: 30 September 2010

Application of laser methods for identification of authenticity of documents fabricated from thermoplastic composite material

S. Greicius1
A. Bubulis2
R. Vasiliauskas3
V. Jurenas4
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Abstract

Processes of globalization and integration are pervasive all over the world, and rapid innovation of advanced transportation systems resulted in enormous increase in number of persons travelling cross-border. Normally, persons crossing the border are checked at the first control line. Therefore, application of innovative methods that allow identification of partial alterations in a document or a fully counterfeit document, for initial checking of documents remains a relevant issue. The holographic interferometry represents one of the non-destructive control methods applicable for document check that enables assessment of defects in the entire area of a document being checked. This paper presents validation of the real-time method of holographic interferometry used for document check as well as parameters of a holographic setup, description of document investigation and analysis of the obtained findings

About this article

Received
24 July 2010
Accepted
10 September 2010
Published
30 September 2010
Keywords
holographic interferometry
mechanical vibration
acoustic excitation source
travel documents